Daim ntawv thov ntawm Laser thiab Radar hauv Laser Range Finder
Laser Xiyuantai ranging instrument network yog ib qho chaw taws teeb sensing tshuab uas ntsuas qhov kev ncua deb ntawm lub sensor thiab lub hom phiaj los ntawm lub laser emitted los ntawm lub sensor (lidar). Raws li cov hom phiaj kev tshawb nrhiav sib txawv, cov cuab yeej no tuaj yeem muab faib ua ob pawg: kev tshawb nrhiav huab cua thiab kev tshawb nrhiav hauv av. Huab cua-rau-huab cua laser ntau lub hom phiaj ua kom tiav qhov kev txiav txim siab ntawm lub cev thiab tshuaj lom neeg ntawm cov huab cua los ntawm emitting ib lub laser beam rau hauv cov huab cua thiab tau txais echoes reflected los ntawm tshem tawm hais nyob rau hauv cov huab cua. Lub hom phiaj tseem ceeb ntawm kev siv hauv av laser yog kom tau txais cov ntaub ntawv saum npoo av xws li geology, topography, landform thiab kev siv av. Raws li kev faib tawm ntawm cov sensor-mounted platforms, laser ntau yam tuaj yeem muab faib ua plaub pawg: qhov chaw-yug (satellite-mounted), huab cua (aircraft-mounted), tsheb-mounted (tsheb-mounted), thiab positioning (taw-pointed). ntsuas).
Laser ntau yam tshuab pib nyob rau hauv 1960s, thiab los ntawm 1970s thiab 1980s, laser technology tau dhau los ua ib feem tseem ceeb ntawm cov khoom siv hluav taws xob. LIDAR (Light Detection And Ranging) feem ntau yog hais txog huab cua hauv av-rau-hauv av laser ntau yam thev naus laus zis, thiab lo lus Suav feem ntau hais txog LIDAR los ntawm laser radar. Hauv Tebchaws Meskas, txij li xyoo 1970, ntau lub koomhaum suav nrog National Aeronautics thiab Space Administration (NASA), National Oceanic thiab Atmospheric Administration (NOAA) thiab US Department of Defense Mapping (DMA) tau pib tsim LIDAR-hom sensors. Rau kev tshawb fawb oceanographic thiab topographic. Hauv Tebchaws Europe, kev tshawb fawb txog kev siv laser pib yuav luag tib lub sijhawm hauv Tebchaws Meskas. Tsis zoo li Tebchaws Meskas, lawv tau cog lus rau kev tsim cov satellite platform laser xws li radar systems, thiab tsom mus rau kev txhim kho thiab kev tshawb fawb ntawm cov huab cua platforms thiab txuam nrog laser radar systems. Thiab tau txais txiaj ntsig zoo heev.
Los ntawm xyoo 1990, nrog rau kev txhim kho ntawm huab cua GPS thev naus laus zis thiab lub khoos phis tawj nqa tau yooj yim, kev ruaj ntseg thiab qhov tseeb ntawm LIDAR system tau txhim kho zoo heev, thiab nws tau maj mam muab tso rau hauv kev lag luam siv hauv Tebchaws Europe, thiab lwm yam kev tshawb fawb tau pib tam sim hauv Tebchaws Europe.
Piv nrog rau lwm yam kev paub txog tej thaj chaw deb thev naus laus zis, kev tshawb fawb ntawm LIDAR yog qhov chaw tshiab heev, thiab kev tshawb fawb txog kev txhim kho qhov raug thiab zoo ntawm LIDAR cov ntaub ntawv thiab txhawb nqa LIDAR cov ntaub ntawv thov kev siv thev naus laus zis heev. Qhov sib txawv ntawm cov cuab yeej siv hluav taws xob ntsuas hluav taws xob, LIDAR system tuaj yeem tau txais cov ntaub ntawv ntawm peb-dimensional geographic tswj cov ntaub ntawv ntawm cov av saum npoo av thiab cov khoom sib xws hauv av (ntoo, vaj tse, hauv av, thiab lwm yam), thiab nws cov yam ntxwv peb-seem raws li qhov Kev tshawb fawb tseem ceeb ntawm lub ntiaj teb digital niaj hnub no.
Nrog kev txhim kho tas mus li ntawm LIDAR sensors, maj mam nce qhov ceev ntawm qhov chaw sampling cov ntsiab lus, thiab qhov nce ntawm cov echoes uas tuaj yeem rov qab tau los ntawm ib lub teeb laser, LIDAR cov ntaub ntawv yuav muab cov ntaub ntawv ntau dua thiab cov khoom nto. Lim, interpolate, faib, thiab ntu ntu ntu 3D cov ntsiab lus sau los ntawm LIDAR kom tau txais ntau yam high-precision 3D cov qauv hauv av, faib thiab txheeb xyuas cov khoom nto thiab paub cov khoom nto xws li ntoo, 3D digital reconstruction ntawm lub tsev, thiab lwm yam., thiab txawm yog kos duab 3D hav zoov, 3D lub nroog qauv, thiab tsim virtual kev muaj tiag. Raws li lub hauv paus ntawm kev muaj tiag virtual, ib qho kev qhia ntxaws ntxaws hauv av tuaj yeem ua rau kwv yees qhov tsis sib xws ntawm thaj av hav zoov thiab nws cov ntoo sawv ntsug, kom paub txog kev tswj xyuas hav zoov zoo thiab kev ua liaj ua teb; Nws tuaj yeem txheeb xyuas kev npaj hauv nroog, ib puag ncig hauv nroog thiab kev nyab xeeb hauv nroog Ua kom pom kev simulation kom paub txog kev ntsuas thiab tswj cov suab, lub teeb thiab ib puag ncig muaj kuab lom.
